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*:/:I1-3111ia <br />Table 2 Maximum Daily Regional Construction Emissions <br />Construction Phase <br />Criteria Air Pollutant Emissions Ibslda ',z' <br />VOC NOx CO <br />87 PMn PM21 <br />Raitt Street Site- Worst -Case <br />Grading <br />1 <br />16 <br />7 <br /><1 <br />3 <br />2 <br />Building Construction <br />2 <br />17 <br />14 <br /><1 <br />1 <br />1 <br />Building Construction + Paving <br />3 <br />26 <br />24 <br /><1 <br />2 <br />1 <br />Raiff Street Site Maximum Daily Construction <br />Emissions <br />3 <br />26 <br />24 <br /><1 <br />3 <br />2 <br />Total Maximum Daily Construction <br />6th Street Ste + Raitt Street Ste <br />6 <br />52 <br />46 <br /><1 <br />6 <br />4 <br />SCAQMD Regional Significance Threshold <br />75 <br />100 <br />550 <br />150 <br />150 <br />55 <br />Exceeds Threshold? <br />No <br />No <br />No <br />No <br />No <br />No <br />Source: CalEEMod Version 2016.3.2 <br />Notes: Totals may not total to 100 percent due to rounding. <br />1 Construction phasing is based on the preliminary information provided by the applicant Where specific information regarding proposed project -related construction <br />activities was not available, construction assumptions were based on CalEEMod defaults, which are based on construction surveys conducted by SCAQMD of <br />construction equipment and phasing for comparable pmjecs. <br />3 Includes implementation of fugitive dust control measures under SCAQMD Rule 403, including watering disturbed areas a minimum of two times per day, reducing <br />speed limit to 15 miles per hour on unpaved surfaces, replacing ground cover quickly, and street sweeping with Rule 1186-compliant sweepers. Modeling also <br />assumes a VOC of 100 g'L pursuant to SCAQMD Rule 1113. <br />] Modelino associated with the Raid Street Site also reflects a conservafive evaluation of mnstmcfion at the 61ti Street Site <br />Regional Long -Term Operation -Phase Impacts <br />Typically, the primacy source of new long-term criteria air pollutants generated by a project is mobile -source <br />emissions from vehicle trips Because both replacement parks would be constructed to serve nearby residences, <br />they are considered as walk-up facilities which would result in minimal additional trip increases or change in <br />traffic volumes (i.e., less than 9 peak hour trips from the 6th Street Site and the Raitt Street Site combined). <br />The proposed project does not include the construction of on -site parking or uses that typically generate <br />substantial increases in vehicular traffic such as ball fields and skate parks. Other projectrelatedemissions are <br />derived from area sources (e.g., landscape equipment and aerosol use), building energy (energy use for cooling, <br />heating, and cooking), and on site off foad equipment; these are analyzed based on the net increase in building <br />square footage. Since the proposed project do not include a substantial increase in building square footage, new <br />source air pollution or an increase in onsite emissions would be minimal and would not exceed SCAQMD <br />regional significance threshold values. Therefore, impacts to the regional an quality from project -related <br />operation activities would be less than significant and no mitigation measures are necessary. <br />c) Expose sensitive receptors to substantial pollutant concentrations? <br />Less Than Significant Impact. The following describes changes in localized impacts from short-term <br />construction activities and long-term operation of the proposed project. <br />75C-80 <br />